xref: /openbmc/qemu/contrib/elf2dmp/addrspace.h (revision a15f9749)
1 /*
2  * Copyright (c) 2018 Virtuozzo International GmbH
3  *
4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
5  *
6  */
7 
8 #ifndef ADDRSPACE_H
9 #define ADDRSPACE_H
10 
11 #include "qemu_elf.h"
12 
13 #define ELF2DMP_PAGE_BITS 12
14 #define ELF2DMP_PAGE_SIZE (1ULL << ELF2DMP_PAGE_BITS)
15 #define ELF2DMP_PAGE_MASK (ELF2DMP_PAGE_SIZE - 1)
16 #define ELF2DMP_PFN_MASK (~(ELF2DMP_PAGE_SIZE - 1))
17 
18 #define INVALID_PA  UINT64_MAX
19 
20 struct pa_block {
21     uint8_t *addr;
22     uint64_t paddr;
23     uint64_t size;
24 };
25 
26 struct pa_space {
27     size_t block_nr;
28     struct pa_block *block;
29 };
30 
31 struct va_space {
32     uint64_t dtb;
33     struct pa_space *ps;
34 };
35 
36 void pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf);
37 void pa_space_destroy(struct pa_space *ps);
38 
39 void va_space_create(struct va_space *vs, struct pa_space *ps, uint64_t dtb);
40 void va_space_set_dtb(struct va_space *vs, uint64_t dtb);
41 void *va_space_resolve(struct va_space *vs, uint64_t va);
42 bool va_space_rw(struct va_space *vs, uint64_t addr,
43                  void *buf, size_t size, int is_write);
44 
45 #endif /* ADDRSPACE_H */
46